Researchers have slammed the recommendation by a UK Department of Health committee that all flour should be fortified with folic acid, according to an article in the British Medical Journal (Volume 323, p 1198). The recommendation is intended to reduce the level of neural tube defects in new born babies, caused by a lack of folic acid in pregnant women's diets, but child health experts Brian Wharton and Ian Booth warn that the policy requires careful consideration before it is implemented.